121110222012021 has 32 divisors (see below), whose sum is σ = 206035465420800. Its totient is φ = 69536969573040.

The previous prime is 121110222012001. The next prime is 121110222012041. The reversal of 121110222012021 is 120210222011121.

It is an interprime number because it is at equal distance from previous prime (121110222012001) and next prime (121110222012041).

It is not a de Polignac number, because 121110222012021 - 2⁶ = 121110222011957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121110222011985 and 121110222012003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110222012001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10731008181 + ... + 10731019466.

It is an arithmetic number, because the mean of its divisors is an integer number (6438608294400).

Almost surely, 2^{121110222012021} is an apocalyptic number.

121110222012021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121110222012021 is a deficient number, since it is larger than the sum of its proper divisors (84925243408779).

121110222012021 is a wasteful number, since it uses less digits than its factorization.

121110222012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21462027686 (or 21462027680 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121110222012021 its reverse (120210222011121), we get a palindrome (241320444023142).

The spelling of 121110222012021 in words is "one hundred twenty-one trillion, one hundred ten billion, two hundred twenty-two million, twelve thousand, twenty-one".